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Wang Y, Sun N, He R, Wang Z, Jin J, Gao T, Qu J. Molecular characterization of m6A RNA methylation regulators with features of immune dysregulation in IgA nephropathy. Clin Exp Med 2024; 24:92. [PMID: 38693353 PMCID: PMC11062981 DOI: 10.1007/s10238-024-01346-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 04/02/2024] [Indexed: 05/03/2024]
Abstract
The role of RNA N6-methyladenosine (m6A) modification in immunity is being elucidated. This study aimed to explore the potential association between m6A regulators and the immune microenvironment in IgA nephropathy (IgAN). The expression profiles of 24 m6A regulators in 107 IgAN patients were obtained from the Gene Expression Omnibus (GEO) database. The least absolute shrinkage and selection operator (LASSO) regression and logistic regression analysis were utilized to construct a model for distinguishing IgAN from control samples. Based on the expression levels of m6A regulators, unsupervised clustering was used to identify m6A-induced molecular clusters in IgAN. Gene set enrichment analysis (GSEA) and immunocyte infiltration among different clusters were examined. The gene modules with the highest correlation for each of the three clusters were identified by weighted gene co-expression network analysis (WGCNA). A model containing 10 m6A regulators was developed using LASSO and logistic regression analyses. Three molecular clusters were determined using consensus clustering of 24 m6A regulators. A decrease in the expression level of YTHDF2 in IgAN samples was significantly negatively correlated with an increase in resting natural killer (NK) cell infiltration and was positively correlated with the abundance of M2 macrophage infiltration. The risk scores calculated by the nomogram were significantly higher for cluster-3, and the expression levels of m6A regulators in this cluster were generally low. Immunocyte infiltration and pathway enrichment results for cluster-3 differed significantly from those for the other two clusters. Finally, the expression of YTHDF2 was significantly decreased in IgAN based on immunohistochemical staining. This study demonstrated that m6A methylation regulators play a significant role in the regulation of the immune microenvironment in IgAN. Based on m6A regulator expression patterns, IgAN can be classified into multiple subtypes, which might provide additional insights into novel therapeutic methods for IgAN.
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Affiliation(s)
- Yihao Wang
- Department of Nephrology, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, 200003, China
| | - Nan Sun
- Department of Urology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Rui He
- Shanghai Immune Therapy Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Zida Wang
- Department of Emergency, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Jingsi Jin
- Shanghai Immune Therapy Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Ting Gao
- Department of Emergency, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
| | - Junwen Qu
- Department of Urology, Jiading Branch, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201899, China.
- Department of Urology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
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Wang C, Cai X, Lin S, Lin Y. Hydroxychloroquine ameliorates immune functionality and intestinal flora disorders of IgA nephropathy by inhibition of C1GALT1/Cosmc pathway. Immunopharmacol Immunotoxicol 2024; 46:218-228. [PMID: 38151955 DOI: 10.1080/08923973.2023.2300306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 12/24/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND Hydroxychloroquine (HCQ) has emerged as a potential and secure antiproteinuric agent in IgA nephropathy (IgAN). This study endeavored to explore the impact of HCQ on the immune functionality and intestinal flora disorders in IgAN rats, as well as to elucidate the underlying mechanisms through in vivo and in vitro experiments. METHODS IgAN model was established in Sprague-Dawley rats through the administration of BSA, LPS, and CCl4, and the IgAN rats received a continuous 8-week treatment with HCQ. Moreover, the human glomerular mesangial cells (HMCs) were incubated with IgA1 to establish an in vitro cellular model of IgAN. At the end of experimental period, samples were collected for further analysis. RESULTS HCQ ameliorated the elevated levels of 24hUTP, SCr, BUN, the number of urinary RBC, and the activation of inflammation-related proteins within the TLR4/NF-κB signaling pathway. In the IgAN rat group, there was a pronounced escalation in IgA deposition, mesangial matrix hyperplasia, and glomerular inflammatory cell infiltration, while the administration of HCQ effectively mitigated these pathological changes. In addition, the reduced production of CD4+CD25+Foxp3+ Treg in the IgAN group was effectively reversed by HCQ. Furthermore, HCQ has the capacity to restore the compromised state of the intestinal mucosal barrier induced by IgAN and mitigate the circumstances of intestinal permeability and disruption in the intestinal flora. CONCLUSION HCQ diminishes IgA aberrant glycosylation levels, ameliorates renal and intestinal histopathological damage, and attenuates intestinal flora disorders and immune dysfunction in IgAN rats by means of activating the C1GALT1/Cosmc pathway.
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Affiliation(s)
- Chaochao Wang
- Department of Nephrology, Zhejiang Chinese Medical University Affiliated Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, China
| | - Xiaoqiao Cai
- Department of Nephrology, Zhejiang Chinese Medical University Affiliated Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, China
| | - Shengfen Lin
- Department of Nephrology, Zhejiang Chinese Medical University Affiliated Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, China
| | - Yongqiang Lin
- Department of Nephrology, Zhejiang Chinese Medical University Affiliated Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, China
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Gaumond L, Lamarche C, Beauchemin S, Henley N, Elftouh N, Gerarduzzi C, Laurin LP. Identification of inflammatory biomarkers in IgA nephropathy using the NanoString technology: a validation study in Caucasians. Inflamm Res 2024; 73:447-457. [PMID: 38291238 PMCID: PMC10894174 DOI: 10.1007/s00011-023-01848-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/16/2023] [Accepted: 12/27/2023] [Indexed: 02/01/2024] Open
Abstract
OBJECTIVE AND DESIGN Immunoglobulin A nephropathy (IgAN) is a kidney disease characterized by the accumulation of IgA deposits in the glomeruli of the kidney, leading to inflammation and damage to the kidney. The inflammatory markers involved in IgAN remain to be defined. Gene expression analysis platforms, such as the NanoString nCounter system, are promising screening and diagnostic tools, especially in oncology. Still, their role as a diagnostic and prognostic tool in IgAN remains scarce. In this study, we aimed to validate the use of NanoString technology to identify potential inflammatory biomarkers involved in the progression of IgAN. SUBJECTS A total of 30 patients with biopsy-proven IgAN and 7 cases of antineutrophil cytoplasmic antibody (ANCA)-associated pauci-immune glomerulonephritis were included for gene expression measurement. For the immunofluorescence validation experiments, a total of 6 IgAN patients and 3 controls were included. METHODS Total RNA was extracted from formalin-fixed paraffin-embedded kidney biopsy specimens, and a customized 48-plex human gene CodeSet was used to study 29 genes implicated in different biological pathways. Comparisons in gene expression were made between IgAN and ANCA-associated pauci-immune glomerulonephritis patients to delineate an expression profile specific to IgAN. Gene expression was compared between patients with low and moderate risk of progression. Genes for which RNA expression was associated with disease progression were analyzed for protein expression by immunofluorescence and compared with controls. RESULTS IgAN patients had a distinct gene expression profile with decreased expression in genes IL-6, INFG, and C1QB compared to ANCA patients. C3 and TNFRSF1B were identified as potential biomarkers for IgAN progression in patients early in their disease course. Protein expression for those 2 candidate genes was upregulated in IgAN patients compared to controls. Expression of genes implicated in fibrosis (PTEN, CASPASE 3, TGM2, TGFB1, IL2, and TNFRSF1B) was more pronounced in IgAN patients with severe fibrosis compared to those with none. CONCLUSIONS Our findings validate our NanoString mRNA profiling by examining protein expression levels of two candidate genes, C3 and TNFRSF1B, in IgAN patients and controls. We also identified several upregulated mRNA transcripts implicated in the development of fibrosis that may be considered fibrotic markers within IgAN patients.
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Affiliation(s)
- Laurence Gaumond
- Division of Nephrology, Maisonneuve-Rosemont Hospital, 5415 Boulevard de l'Assomption, Montreal, QC, H1T 2M4, Canada
| | - Caroline Lamarche
- Division of Nephrology, Maisonneuve-Rosemont Hospital, 5415 Boulevard de l'Assomption, Montreal, QC, H1T 2M4, Canada
- Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
- Department of Medicine, University of Montreal, Montreal, QC, Canada
| | | | - Nathalie Henley
- Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
| | - Naoual Elftouh
- Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
| | - Casimiro Gerarduzzi
- Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada.
- Department of Medicine, University of Montreal, Montreal, QC, Canada.
| | - Louis-Philippe Laurin
- Division of Nephrology, Maisonneuve-Rosemont Hospital, 5415 Boulevard de l'Assomption, Montreal, QC, H1T 2M4, Canada.
- Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada.
- Department of Medicine, University of Montreal, Montreal, QC, Canada.
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Filleron A, Cezar R, Fila M, Protsenko N, Van Den Hende K, Jeziorski E, Occean B, Chevallier T, Corbeau P, Tran TA. Regulatory T and B cells in pediatric Henoch-Schönlein purpura: friends or foes? Arthritis Res Ther 2024; 26:52. [PMID: 38365843 PMCID: PMC10870453 DOI: 10.1186/s13075-024-03278-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 01/25/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Henoch-Schönlein purpura (HSP) is the most common immunoglobulin A-mediated systemic vasculitis in childhood. We studied immune dysregulation in HSP by analyzing regulatory T (Treg), T helper 3 (Th3), and regulatory B cell (Breg) subpopulations that might intervene in immune activation, IgA production, and HSP clinical manifestations. METHODS This prospective study included 3 groups of children: 30 HSP on acute phase, 30 HSP on remission, and 40 healthy controls (HCs) matched on age. Treg, Breg, and Th3 were analyzed by flow cytometry. Serum immunoglobulin and cytokine levels were quantified by ELISA and Luminex. RESULTS Treg frequencies were higher in acute HSP than in remitting HSP and HCs (6.53% [4.24; 9.21] vs. 4.33% [3.6; 5.66], p = 0.002, and vs. 4.45% [3.01; 6.6], p = 0.003, respectively). Activated Th3 cells (FoxP3 + Th3 cells) tend to be more abundant in HSP than in HCs (78.43% [50.62; 80.84] vs. 43.30% [40.20; 49.32], p = 0.135). Serum IgA, IL-17, and latency-associated peptide (a marker of the anti-inflammatory cytokine TGF-beta production) were significantly and inflammatory cytokines TNF-alpha, IL-1-beta, and IL-6 were non-significantly higher in HSP than HCs. Bregs were identical between the groups, but, in patients with renal impairment, Breg percentage was lower compared to those without. Treg removal in PBMC culture resulted in an increase in IgA production in HSP proving a negative regulatory role of Tregs on IgA production. CONCLUSIONS In pediatric HSP, immune activation persists in spite of an increase in Th3 and Tregs. Th3 could be involved in IgA hyperproduction, inefficiently downregulated by Tregs. Lack of Bregs appears linked to renal impairment.
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Affiliation(s)
- Anne Filleron
- IRMB, Montpellier University, INSERM U1183, Montpellier, France
- Department of Pediatrics, Nîmes University Hospital, Montpellier University, Service de Pédiatrie, Place du Pr R. Debré, 30029, Nîmes Cedex 9, France
| | - Renaud Cezar
- IRMB, Montpellier University, INSERM U1183, Montpellier, France
- Department of Immunology, Nîmes University Hospital, Montpellier University, Nîmes, France
| | - Marc Fila
- Department of Pediatric Nephrology, Montpellier University Hospital, Montpellier University, Montpellier, France
| | - Nastassja Protsenko
- Department of Pediatrics, Nîmes University Hospital, Montpellier University, Service de Pédiatrie, Place du Pr R. Debré, 30029, Nîmes Cedex 9, France
| | - Kathleen Van Den Hende
- Department of Pediatrics, Nîmes University Hospital, Montpellier University, Service de Pédiatrie, Place du Pr R. Debré, 30029, Nîmes Cedex 9, France
| | - Eric Jeziorski
- Department of Pediatric Infectious Diseases, Montpellier University Hospital, Univ Montpellier, INSERM, EFS, Univ Antilles, Montpellier, France
| | - Bob Occean
- Department of Epidemiology, Medical Statistics and Public Health, Nîmes University Hospital, Montpellier University, Nîmes, France
| | - Thierry Chevallier
- Department of Epidemiology, Medical Statistics and Public Health, Nîmes University Hospital, Montpellier University, Nîmes, France
- UMR 1302 Desbrest Institute of Epidemiology and Public Health, INSERM, University of Montpellier, Montpellier, France
| | - Pierre Corbeau
- Department of Immunology, Nîmes University Hospital, Montpellier University, Nîmes, France
- Institute of Human Genetics, CNRS UMR9002, Montpellier University, Montpellier, France
| | - Tu Anh Tran
- IRMB, Montpellier University, INSERM U1183, Montpellier, France.
- Department of Pediatrics, Nîmes University Hospital, Montpellier University, Service de Pédiatrie, Place du Pr R. Debré, 30029, Nîmes Cedex 9, France.
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Jash R, Maparu K, Seksaria S, Das S. Decrypting the Pathological Pathways in IgA Nephropathy. RECENT ADVANCES IN INFLAMMATION & ALLERGY DRUG DISCOVERY 2024; 18:43-56. [PMID: 37870060 DOI: 10.2174/0127722708275167231011102924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/17/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023]
Abstract
IgAN is the most common form of glomerulonephritis affecting 2000000 people annually. The disease ultimately progresses to chronic renal failure and ESRD. In this article, we focused on a comprehensive understanding of the pathogenesis of the disease and thus identifying different target proteins that could be essential in therapeutic approaches in the management of the disease. Aberrantly glycosylated IgA1 produced by the suppression of the enzyme β-1, 3 galactosyltransferase ultimately triggered the formation of IgG autoantibodies which form complexes with Gd-IgA1. The complex gets circulated through the blood vessels through monocytes and ultimately gets deposited in the glomerular mesangial cells via CD71 receptors present locally. This complex triggers the inflammatory pathways activating the alternate complement system, various types of T Cells, toll-like receptors, cytokines, and chemokines ultimately recruiting the phagocytic cells to eliminate the Gd-IgA complex. The inflammatory proteins cause severe mesangial and podocyte damage in the kidney which ultimately initiates the repair process following chronic inflammation by an important protein named TGFβ1. TGF β1 is an important protein produced during chronic inflammation mediating the repair process via various downstream transduction proteins and ultimately producing fibrotic proteins which help in the repair process but permanently damage the glomerular cells.
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Affiliation(s)
- Rajiv Jash
- Department of Pharmacology, Sanaka Educational Trust's Group Of Institutions, Malandighi, Durgapur, 713212, West Bengal, India
- Department of Pharmacy, JIS University, Kolkata, 700109, West Bengal, India
| | - Kousik Maparu
- Department of Pharmacology, Sanaka Educational Trust's Group Of Institutions, Malandighi, Durgapur, 713212, West Bengal, India
| | - Sanket Seksaria
- Department of Pharmacology, Sanaka Educational Trust's Group Of Institutions, Malandighi, Durgapur, 713212, West Bengal, India
| | - Saptarshi Das
- Department of Pharmacy, JIS University, Kolkata, 700109, West Bengal, India
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Research advances on targeted-Treg therapies on immune-mediated kidney diseases. Autoimmun Rev 2023; 22:103257. [PMID: 36563769 DOI: 10.1016/j.autrev.2022.103257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/23/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022]
Abstract
The primary function of regulatory T cells (Tregs) is blocking the pathogenic immunological response mediated by autoreactive cells, establishing and maintaining immune homeostasis in tissues. Kidney diseases are often caused by Immune imbalance, including alloimmune graft damage after renal transplantation, direct immune-mediated kidney diseases like membranous nephropathy (MN) and anti-glomerular basement membrane (anti-GBM) glomerulonephritis, as well as indirect immune-mediated ones like Anti-neutrophil cytoplasmic antibody-associated vasculitis (AAVs), IgA nephropathy (IgAN) and lupus nephritis (LN). Treg cells are deficient numerically and/or functionally in those kidney diseases. Targeted-Treg therapies, including adoptive Tregs transfer therapy and low-dose IL-2 therapy, have begun to thrive in treating autoimmune diseases in recent years. However, the clinical use of targeted Treg-therapies is rarely mentioned in those kidney diseases above except for kidney transplantation. This article mainly discusses the newest progressions of targeted-Treg therapies in those specific examples of immune-mediated kidney diseases. Meanwhile, we also reviewed the main factors that affect Treg development and differentiation, hoping to inspire new strategies to develop target Tregs-therapies. Lastly, we emphasize the significant impediments and prospects to the clinical translation of target-Treg therapy. We advocate for more preclinical and clinical studies on target Tregs-therapies to decipher Tregs in those diseases.
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Qing J, Zheng F, Zhi H, Yaigoub H, Tirichen H, Li Y, Zhao J, Qiang Y, Li Y. Identification of Unique Genetic Biomarkers of Various Subtypes of Glomerulonephritis Using Machine Learning and Deep Learning. Biomolecules 2022; 12:biom12091276. [PMID: 36139115 PMCID: PMC9496457 DOI: 10.3390/biom12091276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Objective: Identification of potential genetic biomarkers for various glomerulonephritis (GN) subtypes and discovering the molecular mechanisms of GN. (2) Methods: four microarray datasets of GN were downloaded from Gene Expression Omnibus (GEO) database and merged to obtain the gene expression profiles of eight GN subtypes. Then, differentially expressed immune-related genes (DIRGs) were identified to explore the molecular mechanisms of GN, and single-sample gene set enrichment analysis (ssGSEA) was performed to discover the abnormal inflammation in GN. In addition, a nomogram model was generated using the R package "glmnet", and the calibration curve was plotted to evaluate the predictive power of the nomogram model. Finally, deep learning (DL) based on a multilayer perceptron (MLP) network was performed to explore the characteristic genes for GN. (3) Results: we screened out 274 common up-regulated or down-regulated DIRGs in the glomeruli and tubulointerstitium. These DIRGs are mainly involved in T-cell differentiation, the RAS signaling pathway, and the MAPK signaling pathway. ssGSEA indicates that there is a significant increase in DC (dendritic cells) and macrophages, and a significant decrease in neutrophils and NKT cells in glomeruli, while monocytes and NK cells are increased in tubulointerstitium. A nomogram model was constructed to predict GN based on 7 DIRGs, and 20 DIRGs of each subtype of GN in glomeruli and tubulointerstitium were selected as characteristic genes. (4) Conclusions: this study reveals that the DIRGs are closely related to the pathogenesis of GN and could serve as genetic biomarkers in GN. DL further identified the characteristic genes that are essential to define the pathogenesis of GN and develop targeted therapies for eight GN subtypes.
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Affiliation(s)
- Jianbo Qing
- The Fifth Clinical Medical College, Shanxi Medical University, Taiyuan 030001, China
- Department of Nephrology, Shanxi Provincial People’s Hospital (Fifth Hospital), Shanxi Medical University, Taiyuan 030001, China
| | - Fang Zheng
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030001, China
| | - Huiwen Zhi
- The Fifth Clinical Medical College, Shanxi Medical University, Taiyuan 030001, China
- Department of Nephrology, Shanxi Provincial People’s Hospital (Fifth Hospital), Shanxi Medical University, Taiyuan 030001, China
| | - Hasnaa Yaigoub
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan 030001, China
| | - Hasna Tirichen
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan 030001, China
| | - Yaheng Li
- Department of Nephrology, Shanxi Provincial People’s Hospital (Fifth Hospital), Shanxi Medical University, Taiyuan 030001, China
- Laboratory for Molecular Diagnosis and Treatment of Kidney Disease, Shanxi Provincial People’s Hospital (Fifth Hospital), Shanxi Medical University, Taiyuan 030001, China
| | - Juanjuan Zhao
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030001, China
| | - Yan Qiang
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030001, China
| | - Yafeng Li
- Department of Nephrology, Shanxi Provincial People’s Hospital (Fifth Hospital), Shanxi Medical University, Taiyuan 030001, China
- Core Laboratory, Shanxi Provincial People’s Hospital (Fifth Hospital), Shanxi Medical University, Taiyuan 030001, China
- Shanxi Provincial Key Laboratory of Kidney Disease, Taiyuan 030001, China
- Academy of Microbial Ecology, Shanxi Medical University, Taiyuan 030001, China
- Correspondence:
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Qing J, Hu X, Li C, Song W, Tirichen H, Yaigoub H, Li Y. Fucose as a potential therapeutic molecule against the immune-mediated inflammation in IgA nepharopathy: An unrevealed link. Front Immunol 2022; 13:929138. [PMID: 36059518 PMCID: PMC9428610 DOI: 10.3389/fimmu.2022.929138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/24/2022] [Indexed: 11/29/2022] Open
Abstract
Background IgA nephropathy (IgAN) is an autoimmune disease that affects people of any age and is an important cause of end-stage renal disease. However, the pathogenesis and pathophysiology of IgAN is not clear. This article aimed to explore the immune-mediated inflammation and genetic mechanisms in IgAN. Methods The transcriptome sequencing data of IgAN glomeruli in the Gene Expression Omnibus database were downloaded. Single-sample gene set enrichment analysis was used to estimate the immune microenvironment of the merged microarray data and GSE141295. IgAN samples were divided into two clusters by cluster analysis. “limma” and “DEseq2” package in R were used to identify differentially expressed genes (DEGs). The weighted gene co-expression network analysis (WGCNA) was used to identify the co-expression modules related to inflammation in IgAN. R software package “clusterProfiler” was used for enrichment analysis, whereas Short Time-Series Expression Miner (STEM) analysis was used to identify the trend of gene expression. Machine-learn (ML) was performed using the shiny app. Finally, Drug Signatures Database (DSigDB) was used to identify potential molecules for treating IgAN. Results The infiltration of macrophages in IgAN glomeruli was increased, whereas CD4+ T cells, especially inducedregulatory T cells (iTregs) were decreased. A total of 1,104 common DEGs were identified from the merged data and GSE141295. Brown module was identified to have the highest inflammatory correlation with IgAN using WGCNA, and 15 hub genes were screened from this module. Among these 15 hub genes, 14 increased with the severity of IgAN inflammation based on STEM analysis. Neural network (nnet) is considered as the best model to predict the severity of IgAN. Fucose identified from DSigDB has a potential biological activity to treat IgAN. Conclusion The increase of macrophages and the decrease of iTregs in glomeruli represent the immune-mediated inflammation of IgAN, and fucose may be a potential therapeutic molecule against IgAN because it affects genes involved in the severe inflammation of IgAN.
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Affiliation(s)
- Jianbo Qing
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, China
- Department of Nephrology, Shanxi Provincial People’s Hospital (Fifth Hospital) of Shanxi Medical University, Taiyuan, China
| | - Xueli Hu
- School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Changqun Li
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, China
| | - Wenzhu Song
- School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Hasna Tirichen
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China
| | - Hasnaa Yaigoub
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China
| | - Yafeng Li
- Department of Nephrology, Shanxi Provincial People’s Hospital (Fifth Hospital) of Shanxi Medical University, Taiyuan, China
- Core Laboratory , Shanxi Provincial People’s Hospital (Fifth Hospital) of Shanxi Medical University, Taiyuan, China
- Shanxi Provincial Key Laboratory of Kidney Disease, Taiyuan, China
- Academy of Microbial Ecology, Shanxi Medical University, Taiyuan, China
- *Correspondence: Yafeng Li,
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Yang YC, Fu H, Zhang B, Wu YB. Interleukin-6 Downregulates the Expression of Vascular Endothelial-Cadherin and Increases Permeability in Renal Glomerular Endothelial Cells via the Trans-Signaling Pathway. Inflammation 2022; 45:2544-2558. [DOI: 10.1007/s10753-022-01711-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 11/05/2022]
Abstract
AbstractThe pathogenesis of IgA nephropathy (IgAN) is still unknown, but reportedly, interleukin 6 (IL-6) is involved in this process. However, its role in damaging glomerular endothelial cells is still unclear. Therefore, in this study, to clarify the mechanism of the pathogenesis of IgAN, we investigated the effect of IL-6 on the permeability of glomerular endothelial cells. A rat model of IgAN was established, and the animals divided into two groups, namely, the normal and IgAN groups. Glomerular endothelial cell injury was evaluated via electron microscopy. Furthermore, IL-6-induced changes in the permeability of human renal glomerular endothelial cells (HRGECs) were measured via trans-endothelial resistance (TEER) measurements and fluorescein isothiocyanate-dextran fluorescence. Furthermore, vascular endothelial-cadherin (VE-cadherin) was overexpressed to clarify the effect of IL-6 on HRGEC permeability, and to determine the pathway by which it acts. The classical signaling pathway was blocked by silencing IL-6R and the trans-signaling pathway was blocked by sgp30Fc. In IgAN rats, electron microscopy showed glomerular endothelial cell damage and western blotting revealed a significant increase in IL-6 expression, while VE-cadherin expression decreased significantly in the renal tissues. IL-6/IL-6R stimulation also significantly increased the permeability of HRGECs (p < 0.05). This effect was significantly reduced by VE-cadherin overexpression (p < 0.01). After IL-6R was silenced, IL-6/IL-6R still significantly reduced VE-cadherin expression and sgp30Fc blocked the trans-signaling pathway as well as the upregulation of IL-6/IL-6R-induced VE-cadherin expression. This suggests that IL-6 mainly acts via the trans-signaling pathway. IL-6 increased the permeability of HRGECs by decreasing the expression of VE-cadherin via the trans-signaling pathway.
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Xu Y, He Y, Hu H, Xu R, Liao Y, Dong X, Song H, Chen X, Chen J. The increased miRNA-150-5p expression of the tonsil tissue in patients with IgA nephropathy may be related to the pathogenesis of disease. Int Immunopharmacol 2021; 100:108124. [PMID: 34600394 DOI: 10.1016/j.intimp.2021.108124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/28/2021] [Accepted: 08/31/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND The microRNA (miRNA) expression of the tonsil tissues in patients with immunoglobulin A (IgA) nephropathy (IgAN) has not been reported in the literature. METHODS In this study, the expression of nine miRNAs was measured in the tonsil tissues of patients with IgAN, including miRNA-21-5p, miRNA-29a-3p, miRNA-34a-5p, miRNA-146a-5p, miRNA-146b-5p, miRNA-148b-3p, miRNA-150-5p, miRNA-155-5p, and miRNA-181a-5p. Forty patients with proved primary IgA nephropathy were enrolled in our study, 20 IgAN patients with gross hematuria, which induced by tonsillitis (GH-IgAN group) and 20 IgAN patients without gross hematuria in the history (non-GH-IgAN group). Another 20 patients recruited as the control group (CT group) were chronic tonsillitis without kidney disease. RESULTS Compared to the CT group, the expression level of miRNA-150-5p in the tonsils was significantly upregulated in the GH-IgAN group, but not in the non-GH-IgAN group (P = 0.031 and P = 0.122, respectively). A correlation analysis was performed between the expression of miRNAs in the tonsils and the clinical data of IgAN patients. The results showed that in the GH-IgAN group, the miRNA-150 expression was positively correlated with systolic blood pressure (β = 2.36, 95% CI 1.11-3.61, P = 0.0016), diastolic blood pressure (β = 1.02, 95% CI 0.22-1.82, P = 0.0224), uric acid (β = 7.43, 95% CI 1.81-13.04, P = 0.0184), leukocyte count (β = 0.22, 95% CI 0.09-0.35, P = 0039), neutrophil count (β = 0.19, 95% CI 0.06-0.32, P = 0.0096), cholesterol (β = 0.09, 95% CI 0.02-0.16, P = 0.0207) and triglyceride level (β = 0.16, 95% CI 0.10-0.22, P < 0.000). Besides, it was negatively correlated with the estimated glomerular filtration rate (eGFR) (β = -2.06, 95% CI: -3.90 - -0.21, P = 0.0421) in the GH-IgAN group; however, no significant correlation was found in the non-GH-IgAN group. CONCLUSION The present findings suggest that miRNA-150-5p may be important in the pathogenesis of IgAN, especially in mucosal immunity against the disease.
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Affiliation(s)
- Yi Xu
- Department of Nephrology, Shenzhen Second People's Hospital, Shenzhen, 518035, China; Health Science Center, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China.
| | - Yongcheng He
- Department of Nephrology, Shenzhen Hengsheng Hospital, Shenzhen, 518102, China
| | - Haofei Hu
- Department of Nephrology, Shenzhen Second People's Hospital, Shenzhen, 518035, China; Health Science Center, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Ricong Xu
- Department of Nephrology, Shenzhen Second People's Hospital, Shenzhen, 518035, China; Health Science Center, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Ying Liao
- Department of Nephrology, Shenzhen Second People's Hospital, Shenzhen, 518035, China; Health Science Center, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Xu Dong
- Department of Nephrology, Shenzhen Second People's Hospital, Shenzhen, 518035, China; Health Science Center, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Haiying Song
- Department of Nephrology, Shenzhen Second People's Hospital, Shenzhen, 518035, China; Health Science Center, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Xiaojie Chen
- Department of Nephrology, Shenzhen Second People's Hospital, Shenzhen, 518035, China; Health Science Center, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Jia Chen
- Department of Nephrology, Shenzhen Second People's Hospital, Shenzhen, 518035, China; Health Science Center, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
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11
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Li S, Wang H, Wu H, Chang X. Therapeutic Effect of Exogenous Regulatory T Cells on Collagen-induced Arthritis and Rheumatoid Arthritis. Cell Transplant 2021; 29:963689720954134. [PMID: 32990025 PMCID: PMC7784507 DOI: 10.1177/0963689720954134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Regulatory T (Treg) cells have anti-inflammatory functions and heighten immune tolerance. The proportion and functions of Treg cells are perturbed in rheumatoid arthritis (RA), contributing to the excessive immune activation associated with this disease. We therefore hypothesized that supplementation with foreign Treg cells could be used to treat RA. To investigate the therapeutic effects of exogenous Treg cells on RA and its mechanism, we used human Treg cells to treat collagen-induced arthritis (CIA) in a rat model to observe whether exogenous Treg cells can treat the disease across species. Successful treatment would indicate that Treg cell transplantation in humans is more likely to affect RA. In the present study, human Treg cells were collected from healthy human peripheral blood and culture-expanded in vitro. Induced human Treg cells were injected into CIA rats via the tail vein. The rats’ lymphocyte subtypes, cytokines, and Th1/Th2 ratios were measured using flow cytometry. In the rats, following injection of the human Treg cells, the severity of CIA was significantly reduced (P < 0.01), the proportion of endogenous Treg cells increased in the peripheral blood and spleen (P = 0.007 and P < 0.01, respectively), and the proportion of B cells decreased (P = 0.031). The IL-5 level, IL-6 level, and Th1/Th2 ratio in the peripheral blood were decreased (P = 0.013, 0.009, and 0.012, respectively). The culture-expanded human Treg cells were also cultured with synovial fibroblast cells from RA patients (RASFs). After coculture with Treg cells, RASFs showed reduced proliferation (P < 0.01) and increased apoptosis (P = 0.037). These results suggest that exogenous and induced Treg cells can produce a therapeutic effect in RA and CIA by increasing endogenous Treg cells and RASF apoptosis and reducing B cells, the Th1/Th2 ratio, and secretion levels of IL-5 and IL-6. Treg cell transplantation could serve as a therapy for RA that does not cause immune rejection.
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Affiliation(s)
- Shutong Li
- 12589Medical Research Center of the Affiliated Hospital of Qingdao University, Qingdao, Shandong, PR China.,Medical Research Center of Shandong Provincial Qianfoshan Hospital, 12589Shandong University, Jinan, PR China.,Medical School of Pingdingshan University, Pingdingshan, Henan, PR China
| | - Hongxing Wang
- Medical Research Center of Shandong Provincial Qianfoshan Hospital, 12589Shandong University, Jinan, PR China
| | - Hui Wu
- Medical Research Center of Shandong Provincial Qianfoshan Hospital, 12589Shandong University, Jinan, PR China
| | - Xiaotian Chang
- 12589Medical Research Center of the Affiliated Hospital of Qingdao University, Qingdao, Shandong, PR China
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12
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Nishino Y, Enya T, Miyazaki K, Morimoto Y, Marutani S, Okada M, Sugimoto K. The potentially therapeutic role of tonsillectomy in the alleviation of several renal diseases apart from IgA nephropathy. Med Hypotheses 2020; 146:110405. [PMID: 33261919 DOI: 10.1016/j.mehy.2020.110405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 11/26/2022]
Abstract
Tonsils are located mainly at the gateway of the respiratory tract, and are reportedly one of the secondary lymphatic organs of the immune system. The development of several diseases including IgA nephropathy (IgAN) is associated with inflammatory stimulation and an aberrant immune response of the tonsils. Several studies have reported an improvement in and/or an increase in the stability of the clinicopathological findings of patients with IgAN post tonsillectomy. However, the efficacy in and precise mechanism of the alleviation of symptoms of other renal diseases by tonsillectomy remain unknown. We hypothesize that tonsillectomy may play a potentially therapeutic role in renal diseases apart from IgAN, which are thought to be caused by an impaired regulation of the immune system.
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Affiliation(s)
- Yuuki Nishino
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Takuji Enya
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Kohei Miyazaki
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Yuichi Morimoto
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Satoshi Marutani
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Mitsuru Okada
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Keisuke Sugimoto
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan.
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13
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Chang S, Li XK. The Role of Immune Modulation in Pathogenesis of IgA Nephropathy. Front Med (Lausanne) 2020; 7:92. [PMID: 32266276 PMCID: PMC7105732 DOI: 10.3389/fmed.2020.00092] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 03/03/2020] [Indexed: 01/10/2023] Open
Abstract
IgA nephropathy (IgAN) is the most prevalent primary glomerulonephritis worldwide, with diverse clinical manifestations characterized by recurrent gross hematuria or microscopic hematuria, and pathological changes featuring poorly O-galactosylated IgA1 deposition in the glomerular mesangium. Pathogenesis has always been the focus of IgAN studies. After 50 years of research, most scholars agree that IgAN is a group of clinicopathological syndromes with certain common immunopathological characteristics, and multiple mechanisms are involved in its pathogenesis, including immunology, genetics, and environmental or nutritional factors. However, the precise pathogenetic mechanisms have not been fully determined. One hypothesis about the pathogenesis of IgAN suggests that immunological factors are engaged in all aspects of IgAN development and play a critical role. A variety of immune cells (e.g., dendritic cells, NK cells, macrophages, T-lymphocyte subsets, and B-lymphocytes, etc.) and molecules (e.g., IgA receptors, Toll-like receptors, complements, etc.) in innate and adaptive immunity are involved in the pathogenesis of IgAN. Moreover, the abnormality of mucosal immune regulation is the core of IgAN immunopathogenesis. The roles of tonsil immunity or intestinal mucosal immunity, which have received more attention in recent years, are supported by mounting evidence. In this review, we will explore the latest research insights on the role of immune modulation in the pathogenesis of IgAN. With a better understanding of immunopathogenesis of IgAN, emerging therapies will soon become realized.
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Affiliation(s)
- Sheng Chang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education NHC Key Laboratory of Organ Transplantation Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China.,Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Xiao-Kang Li
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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14
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Deng F, Zhang J, Li Y, Wang W, Hong D, Li G, Feng J. Hirudin ameliorates immunoglobulin A nephropathy by inhibition of fibrosis and inflammatory response. Ren Fail 2019; 41:104-112. [PMID: 30880546 PMCID: PMC6427573 DOI: 10.1080/0886022x.2019.1583113] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Immunoglobulin A nephropathy (IgAN) is characterized by mesangial IgA and IgG co-deposition. As the clinical course of IgAN is highly variable, a lot of patients will eventually develop to end-stage renal disease (ESRD) within years. Hirudin, a potent and specific thrombin inhibitor, has been reported to treat IgAN with hematuria, but the mechanism is unclear. Our study aims to explore the potential of hirudin and the underlying mechanism in the treatment of IgAN. The establishment of IgAN model was set up in rats through oral and intravenous immunization with bovine gamma-globulin (BGG). Results suggested that hirudin could reduce the increased level of proteinuria, serum creatinine and urea nitrogen in IgAN models. Besides that, hirudin ameliorated the elevated number of apoptotic bodies and expressions of apoptosis-related proteins (caspase-3 and caspase-9) in IgAN model. The fibrosis indexes (transforming growth factor β-1 (TGF-β1), Collagen-IV (CoI-IV) and Fibronectin-1) of kidney were remarkably suppressed in IgAN rats treated with hirudin compared with IgAN rats with no further treatment. IgAN rats exhibited remarkably increased inflammatory factors (IL-1β, IL-6, and IL-18), while hirudin treatment significantly alleviated these alterations. Moreover, the reduced levels of CD4+CD25+Foxp3+ Treg and CD4+IFN-γ+ Th1/CD4+IL-4+ Th2 could be reversed by hirudin in IgAN model. Furthermore, in the process of IgAN, hirudin could inactivate various pathways (IκBα, NF-κB, TNF-α, and VCAM-1) compared with IgAN model group. Taken together, our study indicated that hirudin could ameliorate IgAN through suppressing fibrosis and inflammatory response. These findings provide a new therapeutic method to treat IgAN.
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Affiliation(s)
- Fei Deng
- a Department of Nephrology , Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital , Chengdu , PR China
| | - Jingwei Zhang
- b Department of Laboratory Medicine , Chengdu Second People's Hospital , Chengdu , PR China
| | - Yi Li
- a Department of Nephrology , Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital , Chengdu , PR China
| | - Wei Wang
- a Department of Nephrology , Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital , Chengdu , PR China
| | - Daqing Hong
- a Department of Nephrology , Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital , Chengdu , PR China
| | - Guisen Li
- a Department of Nephrology , Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital , Chengdu , PR China
| | - Jing Feng
- c Department of Traditional Chinese Medicine , Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital , Chengdu , PR China
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15
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Ruszkowski J, Lisowska KA, Pindel M, Heleniak Z, Dębska-Ślizień A, Witkowski JM. T cells in IgA nephropathy: role in pathogenesis, clinical significance and potential therapeutic target. Clin Exp Nephrol 2019; 23:291-303. [PMID: 30406499 PMCID: PMC6394565 DOI: 10.1007/s10157-018-1665-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 10/25/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Immunoglobulin A nephropathy (IgAN), the most frequent cause of primary glomerulonephritis worldwide, is an autoimmune disease with complex pathogenesis. In this review, we focus on T cells and summarize knowledge about their involvement in pathophysiology and treatment of IgAN METHODS: We reviewed the literature for (1) alterations of T cell subpopulations in IgAN, (2) experimental and clinical proofs for T cells' participation in IgAN pathogenesis, (3) clinical correlations with T cell-associated alterations, and (4) influence of drugs used in IgAN therapy on T cell subpopulations. RESULTS We found that IgAN is characterized by higher proportions of circulatory Th2, Tfh, Th17, Th22 and γδ T cells, but lower Th1 and Treg cells. We discuss genetic and epigenetic makeup that may contribute to this immunological phenotype. We found that Th2, Th17 and Tfh-type interleukins contribute to elevated synthesis of galactose-deficient IgA1 (Gd-IgA1) and that the production of anti-Gd-IgA1 autoantibodies may be stimulated by Tfh cells. We described the roles of Th2, Th17, Th22 and Treg cells in the renal injury and summarized correlations between T cell-associated alterations and clinical features of IgAN (proteinuria, reduced GFR, hematuria). We detailed the impact of immunosuppressive drugs on T cell subpopulations and found that the majority of drugs have nonoptimal influence on T cells in IgAN patients. CONCLUSIONS T cells play an important role in IgAN pathogenesis and are correlated with its clinical severity. Clinical trials with the drugs targeting the reported alterations of the T-cell compartment are highly desirable.
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Affiliation(s)
- Jakub Ruszkowski
- Department of Pathophysiology, Faculty of Medicine, Medical University of Gdańsk, Dębinki 7, 80-211, Gdańsk, Poland.
| | - Katarzyna A Lisowska
- Department of Pathophysiology, Faculty of Medicine, Medical University of Gdańsk, Dębinki 7, 80-211, Gdańsk, Poland
| | - Małgorzata Pindel
- Department of Pathophysiology, Faculty of Medicine, Medical University of Gdańsk, Dębinki 7, 80-211, Gdańsk, Poland
| | - Zbigniew Heleniak
- Department of Nephrology, Transplantology and Internal Medicine, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Alicja Dębska-Ślizień
- Department of Nephrology, Transplantology and Internal Medicine, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Jacek M Witkowski
- Department of Pathophysiology, Faculty of Medicine, Medical University of Gdańsk, Dębinki 7, 80-211, Gdańsk, Poland
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16
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Huang H, Luo Y, Liang Y, Long X, Peng Y, Liu Z, Wen X, Jia M, Tian R, Bai C, Li C, He F, Lin Q, Wang X, Dong X. CD4(+)CD25(+) T Cells in primary malignant hypertension related kidney injury. Sci Rep 2016; 6:27659. [PMID: 27278520 PMCID: PMC4899787 DOI: 10.1038/srep27659] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 05/18/2016] [Indexed: 01/10/2023] Open
Abstract
CD4+CD25+ T cells are critical for maintenance of immunologic self-tolerance. We measured the number of CD4+CD25+ cells in the patients with primary malignant hypertension related kidney injury, to explore the molecular pathogenesis of this disease. We selected 30 patients with primary malignant hypertension related kidney injury and 30 healthy volunteers. Information on clinical characteristics and laboratory tests was obtained from each subject. The number of CD4+CD25+ cells and glomerular injury were assessed by flow cytometry and histopathology, respectively. Both serum IL-2, IL-4, and IL-6 and endothelial cell markers were analyzed by ELISA. ADAMTS13 antibody was detected by Western blotting. CD4+CD25+ cells were significantly reduced in patients with primary malignant hypertension related kidney injury compared to controls (P < 0.05). The number of CD4+CD25+ cells was negatively related to blood urea nitrogen, serum uric acid, proteinuria, and supernatant IL-4; whereas positively associated with estimated glomerular filtration rate in patients. Gradually decreasing CD4+CD25+ cells were also found as increasing renal injury. Additionally, patients exhibited increasing supernatant IL-4, serum IL-2 and IL-6, endothelial cell markers, and anti-ADAMTS13 antibody compared with controls (all P < 0.05). CD4+CD25+ cells may play a key role in the pathogenesis of primary malignant hypertension related kidney injury.
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Affiliation(s)
- Hongdong Huang
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China.,Division of Nephrology, Hunan Normal University, Hunan Provincial People's Hospital of China, Changsha, Hunan Province, P.R. China
| | - Yang Luo
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China
| | - Yumei Liang
- Division of Nephrology, Hunan Normal University, Hunan Provincial People's Hospital of China, Changsha, Hunan Province, P.R. China
| | - Xidai Long
- Department of Liver Surgery, the Affiliated Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Youming Peng
- Hunan Key Laboratory of Nephrology and Hemoperfusion, Division of Nephrology, Second Xiangya Hospital of Central South University, Changsha, Hunan Province, P.R. China
| | - Zhihua Liu
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China
| | - Xiaojun Wen
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China
| | - Meng Jia
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China
| | - Ru Tian
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China
| | - Chengli Bai
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China
| | - Cui Li
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China
| | - Fuliang He
- Department of Interventional Therapy, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China.,Section of Hematology/Oncology, Section of Gastroenterology, Stephenson Cancer Center, Department of Internal Medicine, College of Medicine, The University of Oklahoma Health Sciences Center, USA
| | - Qiushi Lin
- Section of Hematology/Oncology, Section of Gastroenterology, Stephenson Cancer Center, Department of Internal Medicine, College of Medicine, The University of Oklahoma Health Sciences Center, USA
| | - Xueyan Wang
- Center of Allergy, Beijing Shijitan Hospital, Capital Medical University, Beijing, P.R. China
| | - Xiaoqun Dong
- Department of Interventional Therapy, Beijing Shijitan Hospital, Capital Medical University, The 9th Affiliated Hospital of Peking University, Beijing, P.R. China.,Section of Hematology/Oncology, Section of Gastroenterology, Stephenson Cancer Center, Department of Internal Medicine, College of Medicine, The University of Oklahoma Health Sciences Center, USA
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17
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Chen X, Peng S, Zeng H, Fu A, Zhu Q. Toll-like receptor 4 is involved in a protective effect of rhein on immunoglobulin A nephropathy. Indian J Pharmacol 2015; 47:27-33. [PMID: 25821307 PMCID: PMC4375814 DOI: 10.4103/0253-7613.150319] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/06/2014] [Accepted: 10/13/2014] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES The objective was to investigate the protective effects of rhein on renal histology change and the effects of rhein on renal tissue toll-like receptor (TLR) 4, TLR9, transforming growth factor-β1 (TGF-β1) expression in immunoglobulin A nephropathy (IgAN) rats. MATERIALS AND METHODS Bovine serum albumin-lipopolysaccharide-carbon tetrachloride 4 method was used to establish IgAN model. Thirty-two male sprague dawley rats were randomly divided into the control group, IgAN model group, rhein-prevented group, and rhein-treated group. 24-h urinary protein (UP), creatinine, urea, alanine aminotransferase (ALT), total protein (TP) contents in the serum of rats were detected with automatic biochemical analyzer and renal pathological changes were observed by the hematoxylin and eosin and periodic acid-Schiff staining. The glomerular deposition of IgA was measured by immunofluorescence staining. Real-time polymerase chain reaction and immunohistochemistry were used to detect renal tissue contents of TLR4, TLR9, TGF-β1 messenger ribonucleic acid and protein expression. RESULTS The biochemical parameters results of IgAN model rats showed that the 24-h UP excretion and ALT concentration were much higher, and TP concentration was much lower than those of the control group (P < 0.05). Granule-like or mass-like IgA depositions in the mesangial area, glomerular hypercellularity, hyperplasia of mesangial matrix, and tubulointerstitial fibrosis were found in IgAN group. Rhein-prevented and rhein-treated both improved the biochemical parameters and relieved renal pathological injury. The expressions of renal tissue TLR4, TGF-β1, but not TLR9 were significantly elevated in IgAN model rats (P < 0.05). Rhein-prevented and rhein-treated both inhibited TLR4 and TGF-β1 expressions. CONCLUSION Rhein significantly improved the serum and urine biochemical parameters, and attenuated the glomerular pathological changes and tubulointerstitial fibrosis in IgAN rats. The mechanism may involve inhibition of renal TLR4 and TGF-β1 secretion.
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Affiliation(s)
- Xiaowen Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shengnan Peng
- Department of Clinical Medicine, Science and Technology College of Jiangxi Traditional Chinese Medicine University, Nanchang, China
| | - Huihong Zeng
- Department of Histology and Embryology, Medical College of Nanchang University, Nanchang, China
| | - Aixiang Fu
- Department of Library, Medical College of Nanchang University, Nanchang, China
| | - Qingxian Zhu
- Department of Histology and Embryology, Medical College of Nanchang University, Nanchang, China
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18
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Huang H, Luo Y, Liang Y, Long XD, Peng Y, Liu Z, Wen X, Jia M, Tian R, Bai C, Li C, Dong X. CD4+CD25+ cells in multiple myeloma related renal impairment. Sci Rep 2015; 5:16565. [PMID: 26564056 PMCID: PMC4643310 DOI: 10.1038/srep16565] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 10/15/2015] [Indexed: 11/19/2022] Open
Abstract
CD4+CD25+ cells are critical regulators in almost all of the animal models of human organ-specific autoimmune diseases, transplant rejection and allergic diseases. We aimed to explore the role of CD4+CD25+ cells in the pathogenesis of multiple myeloma (MM) related renal impairment (RI). Thirty patients with MM related RI and 30 healthy volunteers were studied. The number of CD4+CD25+ cells was examined by flow cytometry. Clinical and laboratory data were collected from each subject. Glomerular injury was assessed by histopathology. Serum IL-2, IL-4 and IL-6 were analyzed by ELISA. CD4+CD25+ cells significantly decreased in MM related RI patients compared to the controls (P<0.05). CD4+CD25+ cell number was negatively associated with blood urea nitrogen (BUN), supernatant IL-4, serum IL-6, monoclonal immunoglobulin and β2-microglobulin, as well as bone marrow plasma cell percentage and proteinuria; whereas positively associated with estimated glomerular filtration rate (eGFR) (all P < 0.05). CD4+CD25+ cells gradually decreased as the Clinic Stage increased. The number of CD4+CD25+ cells reduced in MM related RI patients, and was correlated with disease severity. CD4+CD25+ cells may play an important role in the pathogenesis of MM related RI.
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Affiliation(s)
- Hongdong Huang
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, P.R. China.,Division of Nephrology, Hunan Normal University, Hunan Provincial People's Hospital of China, Changsha, P.R. China
| | - Yang Luo
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, P.R. China
| | - Yumei Liang
- Division of Nephrology, Hunan Normal University, Hunan Provincial People's Hospital of China, Changsha, P.R. China
| | - Xi-Dai Long
- Department of Liver Surgery, the Affiliated Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Youming Peng
- Hunan Key Laboratory of Nephrology and Hemoperfusion, Division of Nephrology, Second Xiangya Hospital of Central South University, Changsha, Hunan Province, P.R. China
| | - Zhihua Liu
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, P.R. China
| | - Xiaojun Wen
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, P.R. China
| | - Meng Jia
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, P.R. China
| | - Ru Tian
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, P.R. China
| | - Chengli Bai
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, P.R. China
| | - Cui Li
- Division of Nephrology, Beijing Shijitan Hospital, Capital Medical University, P.R. China
| | - Xiaoqun Dong
- Section of Hematology/Oncology, Section of Gastroenterology, Stephenson Cancer Center, Department of Internal Medicine, College of Medicine, The University of Oklahoma Health Sciences Center, USA
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Tian J, Wang Y, Zhou X, Li Y, Wang C, Li J, Li R. Rapamycin slows IgA nephropathy progression in the rat. Am J Nephrol 2014; 39:218-29. [PMID: 24603476 DOI: 10.1159/000358844] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 01/15/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND IgA nephropathy (IgAN) is the most frequent glomerulonephritis worldwide. Different therapeutic approaches have been tested against IgAN. The present study was designed to explore the renoprotective potential of low-dose mammalian target of rapamycin (mTOR) inhibitor rapamycin in an IgAN rat model and the possible mechanism of action. METHODS After establishing an IgAN model, the rats were randomly divided into four groups: control, control with rapamycin treatment, IgAN model, and IgAN model with rapamycin treatment. Coomassie Brilliant Blue was utilized to measure 24-hour urinary protein levels. Hepatic and renal function was determined with an autoanalyzer. Proliferation was assayed via 5-bromo-2'-deoxyuridine incorporation. Real-time PCR and immunohistochemistry were utilized to detect the expression of α-SMA, collagen I, collagen III, TGF-β1 and platelet-derived growth factor. Western blotting and immunohistochemistry were performed to determine p-S6 protein levels. RESULTS Low-dose mTOR inhibitor rapamycin prevented an additional increase in proteinuria and protected kidney function in a model of IgAN. Rapamycin directly or indirectly interfered with multiple key pathways in the progression of IgAN to end-stage renal disease: (1) reduced the deposition of IgA and inhibited cell proliferation; (2) decreased the expression of fibrosis markers α-SMA and type III collagen, and (3) downregulated the expression of the profibrotic growth factors platelet-derived growth factor and TGF-β1. The expression of p-S6 was significantly elevated in IgAN rats. CONCLUSIONS The mTOR pathway was activated in IgAN rats and the early application of low-dose mTOR inhibitor rapamycin may slow the renal injury of IgAN in rats.
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Affiliation(s)
- Jihua Tian
- Department of Nephrology, The Affiliated People's Hospital of Shanxi Medical University, Shanxi Provincial People's Hospital, Shanxi Kidney Disease Institute, Taiyuan, PR China
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